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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






2. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






3. Luteolysis happens because of the ____________ hormone






4. Prevent the cow from getting an infection from the calve






5. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






6. When are dairy cattle dehorned?






7. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






8. Luteolysis happens because of the ____________ hormone






9. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






10. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






11. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






12. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






13. Way to know everything is alright with the breeding male






14. Animals which have many estrous periods per year (ex: cow - sow)






15. Start of the reproductive tract for the female. located outside of the body






16. (switzerland) 2nd in size and milk production - most muscle -






17. Important 'landmark' during palpation






18. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






19. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






20. Duct through penis that carries sperm and urine






21. Sperm is produced here






22. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






23. ~305 days (altough often longer due to breeding difficulties)






24. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






25. Actual heat cycle (period)






26. When are steers and heifers weaned from bottle feeding?






27. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






28. 147 days






29. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






30. 1-2 days






31. Failure to have both testis (gonads) descend






32. Help to signal hormone levels which we need both in the brain right next to each other.






33. To remove/separate testicles from animal's body before animal reaches puberty






34. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






35. Larger the cow - more milk is produced; smaller the cow - less milk is produced






36. Animal which has been castrated after puberty






37. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






38. What helps regulate spermatogenesis?






39. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






40. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






41. 1-3 days






42. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






43. 283 days






44. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






45. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






46. 265-285 days






47. 1-3 days






48. Look for infection - split - and rupture of the penis






49. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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50. Sperm is produced here